Amidst all the hubbub and activities around International Kill-A-Zombie Day on Halloween, and Paul Ducklin determining that there are 80,000 zombies in Australia, one interesting piece of data may have been overlooked.
Every three months Sophos publishes it’s “Dirty dozen” list of top spam-relaying countries. This is an easy way to tell which countries are sending out the most spam from compromised computers (also known as zombies) acting as part of a botnet.
Here’s the latest “Dirty dozen” which we put together at the end of last week, looking at July – September 2009:
Remember that the owners of these computers probably have no idea that their PC (and it usually is a PC, although we do come across compromised Linux and Mac computers too) has been hijacked by a hacker and is silently sending out spam on behalf of…
Read more in my article on the Naked Security website.
Found this article interesting? Follow Graham Cluley on Twitter to read more of the exclusive content we post.